6 Clues to Solve the Mystification

What are the answers to all these clues and what do those answers have in common?

1. An amber tinted paste used on a wienerwurst.
2. A purple fruit
3. Besides the number of days, the months of May and August have this in common.
4. A finely feathered and polychromatic avian friend.
5. A 7 letter word for a pigment like crimson.
6. A bleached and neutral hue.